Dynamic dice and method

Abstract

A die and method of use include a body, generally shaped in a form of a regular polyhedron, and having an interior volume and a plurality of faces, a spherical cavity defined within the interior volume, and a sphere disposed within the spherical cavity. The method includes providing the die; placing the die in a contained volume; agitating the contained volume; and ejecting the die from the contained volume onto a substrate.

1 . A die comprising:
 a body, generally shaped in a form of a regular polyhedron, having an interior volume and a plurality of faces;   a spherical cavity defined within the interior volume; and   a sphere disposed within the spherical cavity.   
     
     
         2 . The die of  claim 1 , wherein a first ratio of a first diameter of the spherical cavity to a dimension of the die measured between a first face and an opposing face on an opposite side of the die is about 0.25 to about 0.9. 
     
     
         3 . The die of  claim 1 , wherein a second ratio of a second diameter of the sphere to the first diameter of the spherical cavity is between about 0.2 and about 0.8. 
     
     
         4 . The die of  claim 1 , wherein the body is a six-sided cube. 
     
     
         5 . The die of  claim 1 , further comprising indicia on at least one face. 
     
     
         6 . The die of  claim 1 , wherein a geometric center of the spherical cavity is generally coincident with a geometric center of the body. 
     
     
         7 . The die of  claim 1 , wherein the body is made of a first material having a first material density and the sphere is made of a second material having a second material density, the second material density being greater than the first material density. 
     
     
         8 . The die of  claim 1 , wherein the spherical cavity has a first surface, the first surface being a smooth or a grabbing surface. 
     
     
         9 . The die of  claim 1 , wherein the sphere has a second surface, the second surface being a smooth or a grabbing surface. 
     
     
         10 . A die comprising:
 a body, generally shaped in a form of a hexahedron, having an interior volume and six generally square, faces;   a spherical cavity defined within the interior volume; and   a sphere disposed within the spherical cavity;   wherein a spherical cavity geometric center is generally coincident with a body geometric center.   
     
     
         11 . The die of  claim 10 , wherein a first ratio of a first diameter of the spherical cavity to a dimension of the die measured between a first face and an opposing face on an opposite side of the die is about 0.25 to about 0.9. 
     
     
         12 . The die of  claim 10 , wherein a second ratio of a second diameter of the sphere to the first diameter of the spherical cavity is between about 0.2 and about 0.8. 
     
     
         13 . The die of  claim 10 , wherein the spherical cavity has a first surface, the sphere has a second surface, and at least a portion of the first surface is generally in contact with the second surface. 
     
     
         14 . The die of  claim 10 , further comprising indicia on at least one face. 
     
     
         15 . A method for using a die comprising:
 providing at least one die comprising:
 a body, generally shaped in a form of a regular polyhedron, the body having an interior volume and a plurality of faces; 
 a spherical cavity defined within the interior volume; and 
 a sphere disposed inside the spherical cavity; 
   placing the die in a contained volume;   agitating the contained volume; and   ejecting the die from the contained volume.